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copied!<p>On OS X it's a good way to do a dynamic build and post-process the resulting ".app" with the <code>macdeployqt</code> tool which comes with Qt starting with 4.5.</p> <p>This will copy the Qt frameworks used by your application into the application bundle, which results in a larger package than building a static version of your application.</p> <p>Here is what you can do to make sure you get the smallest file size possibly in a dynamic build:</p> <ul> <li>First off, make sure you only include the stuff you need (in the project.pro file's <code>QT += core gui network xml</code> lines).</li> <li>Open the application bundle and remove any unneeded "Qt Plugins" from the bundle. <code>macdeployqt</code> automatically compies <em>all</em> the Qt plugins in there, which can be kind of bulky.</li> <li>Make sure you are building your application in <strong>release</strong> mode. Otherwise your application might be linked against the <em>debug libraries</em> of the Qt4 framework, and they are <em>really</em> big (for instance, well over 90 MB for the debug library vs. 16 MB of a release variant without debugging symbols). This might be what happened in your case.</li> <li>If you have a large application binary, you can use <a href="http://upx.sourceforge.net/" rel="nofollow noreferrer">UPX</a> to compress your executable file by 40-50%.</li> </ul> <p>Other than that, you should use compressed disk images to deploy your application.</p> <p>One of my projects uses <em>QtGui</em>, <em>QtNetwork</em>, <em>QtCore</em> and <em>QtXml</em> and the resulting bundle is about 16 MB in size.</p> <p>Hope that helps.</p>

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